var deleteCourt = $('.delete_btn').click(function(){

    var params = {
        "venue_id": $(this).parents("tr").find(".venue_id").text()
    };

    //console.log(params);
    $.ajax({
        url:"http://localhost:8080/gdou_gms/deleteVenueAction.action",
        type:"post",
        dataType:"json",
        data:params,
        success:function(data){
            alert(data);
        },
        error:function(){
            alert("系统异常，请稍后重试！");
        }
    });   
});